She was innocent and kind, but he was ashamed of the right way. When the two met and fell in love, she suddenly became ruthless and brutally killed his closest brothers one by one; she was as gentle as water, and he was a street gangster. She fell in love with him, but was repeatedly hurt by him, using him as a bargaining chip for his own fun; she was charming and never treated people sincerely. He was well-read in poetry, books, and talented, and was ultimately ruined for her; she was a dignified princess of a country. , He was a pioneer in the army of his country, and the two met by chance, but they broke up in tears due to the constant war between the two countries, and they stood on opposite sides; she was a naughty and cute junior sister, and he was a sunny and handsome senior brother. They grew up in the mountains and had feelings for each other. After going down the mountain and experiencing various things, they suddenly discovered that their identities were closely related; 'she' was cold and unlucky, and he was both good and evil. They had the same unknown identity, but...